CN103918040A - Positive temperature coefficient (PTC) device - Google Patents
Positive temperature coefficient (PTC) device Download PDFInfo
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- CN103918040A CN103918040A CN201280055237.9A CN201280055237A CN103918040A CN 103918040 A CN103918040 A CN 103918040A CN 201280055237 A CN201280055237 A CN 201280055237A CN 103918040 A CN103918040 A CN 103918040A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/02—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material having positive temperature coefficient
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C1/00—Details
- H01C1/14—Terminals or tapping points or electrodes specially adapted for resistors; Arrangements of terminals or tapping points or electrodes on resistors
- H01C1/1406—Terminals or electrodes formed on resistive elements having positive temperature coefficient
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Abstract
A PTC device, which reduces the potential of an electrical connection of a solder connection formed to be connected to a substrate from becoming defective as much as possible, is provided. The PTC device comprises a PTC element having: a PTC unit comprising a layered PTC component and a first layered electrode and a second layered electrode, which are each positioned on a surface on either side of the layered PTC component; and insulating layers positioned on the outside of each layered electrode. The PTC element has a first end and a second end, and, at the first end, has a first quarter cylindrical recess in each corner, and at the second end, has second quarter cylindrical recesses in the corners. Each first quarter cylindrical recess has a first castellated electrode that is electrically connected to the first layered electrode, and each second quarter cylindrical recess has a second castellated electrode that is electrically connected to the second layered electrode.
Description
Technical field
The present invention relates to a kind of PTC device, specifically relate to a kind of PTC device of surface installing type.
Background technology
For example, PTC device is used in various electric devices as circuit protecting element, forms the protective circuit of electric device.Such PTC device is configured in the protective circuit substrate with protective circuit.In this case, consider the convenience of configuration, usually use the PTC device of surface installing type.
The PTC device of surface installing type is loaded as its electrode is located on the label (tab) or pad arranging on protective circuit substrate, is electrically connected by soldering, is configured to thus in the protective circuit forming on protective circuit substrate.
In Fig. 1, pass through the schematically illustrated such PTC device of stereogram.Illustrated PTC device 10 is configured to the PTC element 11 having its formation.PTC element 11 is configured to the layered electrode that has PTC key element and configure respectively on the surface of its both sides and the insulating barrier that is positioned at the outside of each layered electrode.In Fig. 1, and not shown these inscapes, but illustrate integratedly as PTC element 11.
PTC element 11 has semicircle tubular concave portion 12 and 14 in the end of both sides at side end face, has side metal level part (for example conductive metal coating layer) 16 and 18 on the surface of semicircle tubular concave portion.On the other hand, PTC element 11 also has end metal level part (for example conductive metal coating layer) 20,22 and 24,26 in the both ends separately of surface and lower surface thereon.Side metal level part 16 and 18 in the top and lower end be connected with end metal level part 20,22 and 24,26, these have formed so-called castle shape (castellation) electrode (20+16+22 and 24+18+26).
In addition, in illustrated mode, castle shape electrode all has metal level part at upper surface and the lower surface of PTC element 11, but general castle shape electrode also can have at a side's of the upper surface of PTC element and lower surface both ends end metal level part (, also can there is no end metal level part in the opposing party's surperficial end).Therefore, castle shape electrode has end metal level part at the upper surface of PTC device and at least one party's of lower surface surperficial both ends.
Although illustrate, in such PTC device, a castle shape electrode is electrically connected with an electrode of the PTC element that is positioned at PTC device, and another castle shape electrode is electrically connected with another electrode of PTC element.Such PTC device, for example, be disclosed in following patent documentation 1.
Such PTC device is implemented in the following manner to the installation of substrate: on the pad arranging on substrate, apply paste scolder by printing, configuration PTC device makes the end metal level part (for example 22) of the castle shape electrode of the lower surface that is positioned at PTC device be positioned on pad across coated paste scolder part, the substrate that has configured like this PTC device is put into and in reflow soldering, made melt solder, solidifies.Schematically illustrated according to the appearance after PTC device being installed on substrate by soldering like this by profile in Fig. 2.
In Fig. 2, the end view drawing after being arranged on vertical plane that the PTC device 10 of the Fig. 1 on substrate 28 comprises this line X-X by utilization and being cut off is represented.In addition, in Fig. 2, only to illustrate the end on the right side of the PTC device of Fig. 1, for castle shape electrode, to exaggerate its thickness to illustrate in order can easily understanding.Between the end metal level part 22 of the pad 30 on substrate and castle shape electrode, form scolder connecting portion 32 by soldering, these are combined into one and are electrically connected.In reflow soldering melting also wetting rising on semicircle tubular concave portion of scolder, thereby the motionless scolder part 34 that is cured of former state is also present in the side metal level part 16 of castle shape electrode as radius, and itself and scolder connecting portion 32 become one.
Formerly technical literature
Patent documentation
Patent documentation 1: No. 6377467 specification of United States Patent (USP)
Summary of the invention
The problem that invention will solve
If the substrate of PTC device that used soldering described above, notices that being electrically connected between PTC device and substrate becomes bad such problem points.More particularly, recognize that sometimes a part for scolder connecting portion 32 is peeled off between end metal level part 22 and pad 30, result, the electrical connection between this becomes insufficient.Therefore the problem that, the present invention will solve is to reduce as far as possible such electrical connection and becomes bad possibility.
Solve the means of problem
The substrate bad for above-mentioned electrical connection studies in detail, and found that at scolder connecting portion 32 and occurs that a part for crackle or scolder connecting portion 32 peels off from end metal level part 22 and/or side metal level part 16.
If further such phenomenon is studied, through the process of expansion/contraction as follows: the in the situation that of the work of PTC device, its temperature rise and PTC key element expands, then, the temperature of PTC key element declines and shrinks and return to original shape.In addition, for example, in the case of thering is the environment (automobile indoor) of electric device of substrate temperature rise/temperature fallen repeatedly, also this process of expansion/contraction repeatedly of PTC key element.
If result ascribes PTC key element expansion/contraction repeatedly to, because its change in volume produces stress, and due to such stress, very large generation that may be by causing crackle, peel off etc.Draw following judgement: particularly have semicircle tubular recess in the side of PTC device as mentioned above, the stress that expansion/contraction produces has stress and concentrate on the tendency of this part, result, the phenomenon such as crackle easily occurs, peel off.Therefore, draw following idea: concentrate by such inhibition stress, in more detail, the position of likely concentrating by increasing stress, concentrate on the total amount of the stress at so each position by minimizing, the generation of can suppress crackle, peeling off etc., and can reduce the possibility of the bad generation of electrical connection.
Based on above-mentioned consideration, inventor is for the concentrated inhibition of stress, concentrate on studies, result has drawn following idea: the position that stress is not likely concentrated is set to 2 positions of the side of the both sides of PTC device, but by being made as the angle part of PTC device,,, by being set to 4 positions, reducing electrical connection and become bad possibility.
Therefore, in the 1st main idea, the invention provides a kind of PTC device,
This PTC device is characterised in that, be configured to and there is (stratiform) PTC element, described PTC element has: PTC unit, and it is configured to the 1st layered electrode and the 2nd layered electrode that have stratiform PTC key element and configure respectively on the surface of its both sides; And insulating barrier, it is positioned at the outside (being positioned at the outside of PTC unit) of each layered electrode,
PTC element has the 1st end and the 2nd end, in the 1st end, has the 1st quadrant tubular recess in its each angle part, and, in the 2nd end, there is the 2nd quadrant tubular recess in its angle part,
Each the 1st quadrant tubular recess has the 1st castle shape electrode being electrically connected with the 1st layered electrode, and each the 2nd quadrant tubular recess has the 2nd castle shape electrode being connected with the 2nd layered electrode.
In 1 mode, this PTC device can be except having the 1st quadrant tubular recess and the 2nd quadrant tubular recess, also can be in the 1st end and the 2nd end also there is the semicircle tubular recess illustrating above.
The PTC device of above-mentioned the 1st main idea, in 1 preferred mode, also can be laminated with multiple PTC unit with the layered electrode configuring on PTC key element and the surface in its both sides that are configured to across insulating barrier.
That is, in the 2nd main idea, the invention provides a kind of different PTC device,
This PTC device is characterised in that, be configured to the PTC element having as duplexer, this duplexer by be configured to there are multiple stratiform PTC key elements and on the surface of the both sides of each PTC key element respectively the 1st layered electrode of configuration and multiple PTC unit of the 2nd layered electrode and being disposed between PTC unit, make these PTC unit insulating barrier separating that is clipped in the middle be laminated
PTC element has the 1st end and the 2nd end,
PTC element, in the 1st end, has the 1st quadrant tubular recess in its each angle part, and, in the 2nd end, there is the 2nd quadrant tubular recess in its angle part,
Each the 1st quadrant tubular recess has the 1st castle shape electrode being electrically connected with the 1st layered electrode of each PTC key element, and each the 2nd quadrant tubular recess has the 2nd castle shape electrode being connected with the 2nd layered electrode.
In 1 mode, this PTC device except thering is the 1st quadrant tubular recess and the 2nd quadrant tubular recess, also can be in the 1st end of PTC element duplexer and the 2nd end also there is the semicircle tubular recess illustrating above.
Invention effect
In PTC device of the present invention, angle part at PTC element or PTC element duplexer has quadrant tubular recess, there is castle shape electrode at this partial configuration, so easily can at least there are 4 positions in concentrated position in the stress that the expansion/contraction of PTC key element produces, result, can reduce the total amount of the stress that acts on each castle shape electrode, so can reduce as far as possible becoming bad possibility with the electrical connection of the scolder connecting portion playing a role in being electrically connected of PTC device.
Accompanying drawing explanation
The stereogram of the schematically illustrated existing PTC device of Fig. 1.
Fig. 2 is schematically illustrated is arranged on the state after substrate by existing PTC device.
The vertical view of the schematically illustrated PTC device of the present invention of Fig. 3.
The vertical view of other modes of the schematically illustrated PTC device of the present invention of Fig. 4.
Fig. 5 is schematically illustrated has (along line Y-Y's of Fig. 4) section of the PTC device of the present invention of single PTC unit.
Fig. 6 is (along line Y-Y of Fig. 4) section of the schematically illustrated PTC device of the present invention with multiple PTC unit.
The stereogram of the PTC device of the present invention shown in the schematically illustrated Fig. 3 of Fig. 7.
Fig. 8 is in order to illustrate the autofrettage of PTC device of the present invention and the vertical view of schematically illustrated crimp body.
Embodiment
The schematically illustrated vertical view according to (being equivalent to the situation that the direction by arrow A is observed in Fig. 1) in the time that PTC device of the present invention is installed to substrate and the in the situation that the opposed supine mode of substrate has loaded PTC device in Fig. 3, in addition schematically illustrated stereogram in Fig. 7.Therefore, the lower surface 38 of the PTC device of Fig. 1 and Fig. 2, in Fig. 3 and Fig. 7, becomes upper surface 38.In illustrated mode, PTC device 10 is configured to has PTC element 11, and PTC element is configured to has the 1st end 42 and the 2nd end 44.
PTC element as the entirety that the 1st quadrant tubular recess (with reference to Fig. 3) the 36 or the 1st quadrant tubular recess (with reference to Fig. 7) the 36 and the 2nd quadrant tubular recess (with reference to Fig. 3) the 37 or the 2nd quadrant tubular recess (with reference to Fig. 7) 37 is cut (, be made as there is no cut out portion in the situation that), in the vertical view of Fig. 3, there is rectangular shape, in addition, in the stereogram of Fig. 7, there is rectangular shape.The PTC element 10 that this quadrant shape part (or quadrant tubular recess) 36 and 37 comes from formation PTC device has quadrant tubular recess 4 angle parts as notch.
In more detail, PTC element 11, in the 1st end 42, has 2 the 1st quadrant cylindrical portion 36, in the 2nd end 44, has 2 the 1st quadrant cylindrical portion 37.In other mode, also can, between 2 the 1st or the 2nd quadrant cylindrical portion 36 and/or 37, there is semicircle tubular recess 12 as shown in Figure 1.
In addition, particularly preferably quadrant tubular recess 36 has 1/4th shape (therefore, being the shape of quadrant in Fig. 3) of cylinder.But PTC element 11, as long as its 4 angle parts are cut, so also can replace the shape of quadrant and have other kerf.In vertical view, kerf can be both right-angle triangle, can be also 1/4th oval shape.
Illustrated PTC device 10 has side metal level part 16 on the side 40 of each the 1st quadrant tubular recess 36 of regulation of PTC element 11, there is end metal deposition layer segment 22 in an end of this side (being upper end 46 in the mode shown in Fig. 7), these metal level parts link into an integrated entity, and form the 1st castle shape electrode 50.In addition, PTC device 10 has side metal level part 17 on the side 41 of each the 2nd quadrant tubular recess 37 of regulation of PTC element 11, there is end metal level part 23 in an end of this side (being upper end 47 in the mode shown in Fig. 7), these metal level parts link into an integrated entity, and form the 2nd castle shape electrode 52.
The side metal level of castle shape electrode spreads all over the whole surface of the side of regulation recess and extends, end metal level part 22 and/or 23 can be illustrated in figure 3 circular, in other mode, also can be as shown in Figure 4, for rectangular-shaped (wherein, thering is the notch corresponding with quadrant shape).
In addition, (in the mode shown in Fig. 7, being lower end 48) also can have end metal level part 20 (in Fig. 7 in another end for side 40 and/or side 41, be shown in broken lines the nearby end metal level part of side as example), these 3 metal level parts (, the side metal level part 16 or 17 on 46Shang end, end metal level part 22 or 23, side and 48Shang end, another end metal level part 20) can form the 1st and/or the 2nd castle shape electrode.Although and not shown, but the 1st castle shape electrode 50 is electrically connected with the 1st layered electrode configuring on the first type surface of one or more PTC key elements that forms PTC element, in addition, the 2nd castle shape electrode 52 is electrically connected with the 2nd layered electrode configuring on the first type surface of one or more PTC key elements that forms PTC element.
In addition, castle shape electrode also can form its entirety by the plating of conductive metal.In this case, can form castle shape electrode by following processing: the plating that carries out conductive metal (such as copper, nickel, tin etc.) after the part beyond the part of covering (masking) formation castle shape electrode, then, remove and cover.In this case, side metal level part and end metal level part are made up of coating layer.
In other mode, end metal level part can be also metal forming and thereon form coating layer.In this case, can form such end metal level part by following processing: be formed on as described later the overlapping crimp body of metal forming on the insulative resin sheet forming as the outermost insulating barrier of PTC element, and leave the metal forming at regulation position by etching after, carry out plating.In which, side metal level part is also made up of coating layer.
And then, in other mode, also can the castle shape electrode being formed by coating layer forming as mentioned above or by metal forming with and on the outermost layer of the castle shape electrode that forms of coating layer on further form the metal level of corrosion resistance excellent by plating.For example, in the situation that outermost layer is made up of copper, the preferably coating layer of overlapping nickel in the above, the coating layer of the coating layer of overlapping tin, or overlapping nickel subsequently, the subsequently coating layer of overlapping gold.
In Fig. 5 schematically illustrated by PTC device of the present invention along the section occurring line Y-Y of Fig. 4 has cut off.Illustrated PTC element 10 has the PTC element 66 of stratiform as a whole, and this PTC element 66 has: PTC unit 60, and it is configured to the 1st layered electrode 56 and the 2nd layered electrode 58 that have stratiform PTC key element 54 and configure respectively on the surface of its both sides; With the 1st insulating barrier 62 and the 2nd insulating barrier 64, it is positioned at the outside (, being positioned at the outside of PTC unit) of each layered electrode.PTC element 66 has the 1st end 42 and the 2nd end, in the 1st end, has the 1st quadrant tubular recess 36 in its each angle part, and, in the 2nd end, there is the 2nd quadrant tubular recess 37 in its angle part.
In addition, being configured to the layered electrode (normally metal forming) that has stratiform PTC key element, be positioned at its both sides and the PTC unit of insulating barrier is well-known member, for example, in above-mentioned patent documentation, be also disclosed, so detailed.
As illustrated, on the side 40 of regulation the 1st quadrant tubular recess, form the 1st castle shape electrode 50 being electrically connected in its end 68 with the 1st layered electrode 56, and, on the side 41 of each the 2nd quadrant tubular recess 37 of regulation, form the 2nd castle shape electrode 52 being electrically connected in its end 70 with the 2nd layered electrode 58.
In order can easily to understand, in illustrated mode, each castle shape electrode is made up of side metal level part 72 (with Fig. 1 16 or 18 corresponding) and the end metal level part 74 (with Fig. 1 20 or 24 corresponding) and 76 (with Fig. 1 22 or 26 corresponding) that is positioned at the upper surface of PTC element 66 and the both ends separately of lower surface.Such metal level part, as described later from the viewpoint of high efficiency manufacture, is preferably metal-plated coating.
The schematically illustrated section occurring the PTC device of other modes of the present invention and Fig. 3 have similarly been cut off in Fig. 6.In illustrated mode, be configured to and have 2 PTC unit 90 and 92 as multiple examples, this PTC unit 90 and 92 is configured to has 2 stratiform PTC key elements 78 and 80 and the 1st layered electrode 82 and the 84 and the 2nd layered electrode 86 and 88 of configuration respectively on the surface of the both sides of each PTC key element.These PTC unit, clamp and are configured between these insulating barriers by insulating barrier 94,96 and 98, make insulating barrier be positioned at its both sides.These insulating barriers and be disposed at PTC unit therebetween and carry out stacked and form the PTC element as duplexer.
With the mode of Fig. 5 similarly, PTC element has the 1st end 42 and the 2nd end 44, in these ends, there is the 1st quadrant cylindrical portion 36 and the 2nd quadrant cylindrical portion 37, on the side that stipulates these quadrant cylindrical portion, formed the 1st castle shape electrode the 50 and the 2nd castle shape electrode 52.In illustrated mode, the 1st layered electrode 82 and 84 is electrically connected with the 1st castle shape electrode 50 in its end, and the 2nd layered electrode 86 and 88 is electrically connected with the 2nd castle shape electrode 52.
In the mode shown in Fig. 6, stacked 2 PTC unit, but the mode that also can be clamped by insulating barrier according to PTC unit, stacked more PTC unit.In this case, be connected with the 1st castle shape electrode by a layered electrode that is configured to each PTC unit, another layered electrode is connected with the 2nd castle shape electrode, can form the device that PTC unit is connected in parallel.
For example, PTC device of the present invention can be manufactured according to mode below.At first, at the first type surface of the both sides of the polymer PTC sheet by the extrusion modling of polymer PTC constituent is obtained, the metal level (for example metal forming) that can form layered electrode to result carries out crimping, or polymer PTC constituent and metal level are pushed simultaneously, obtain thus the duplexer of the state that PTC sheet clamped by metal level.Then, obtained duplexer is implemented to etch processes, thereby remove a part (the corresponding position of part 100 of Fig. 5 or Fig. 6) for metal level, then, in both sides, overlapping result can form the insulative resin sheet (for example prepreg sheet) of insulating barrier, and then, stress outside as required folded conductive metal paper tinsel (for example Copper Foil), by integral these crimping and obtain crimp body.
Then, as shown in Figure 8, bore a hole and make the regulation position in crimp body form hole cylindraceous.Then, the crimp body entirety that completes perforation is implemented to copper plating treatment in the lump, afterwards, the cylindric recess that only covers the part corresponding with the end metal level part of upper surface and lower surface and form by boring a hole, and metal part is in addition carried out to etch processes.Then, remove and cover, thereby the formation part 22 or 23 corresponding with the end metal level part of upper surface and lower surface (is respectively and cuts 90.The rectangle of fan shape part 104) coating layer on the side of the coating layer 106 of 41 larger rectangles gathering and stipulate and the cylindric recess forming by boring a hole.The crimp body 102 of schematically illustrated such formation in Fig. 8.In addition, the part corresponding with the end metal level part 22 or 23 of upper surface and lower surface forming like this, consists of the copper plate of Copper Foil and formation thereon, but in for example Fig. 5, Fig. 6 and Fig. 7, illustrates these as one thing.Then, also can as required, carry out metal deposition processing (for example plating of nickel, tin) to crimp body 102.
In addition, by boring a hole, the thickness part that is configured in the laminated metal in PTC key element can be exposed the side surface part of cylindric recess, thereby such side surface part is carried out the side metal-plated coating of plating at side formation castle shape electrode, and the end of laminated metal is electrically connected with side metal-plated coating.
Cut off by cut-off rule 110 longitudinally of crimp body 102 that such plating is finished and horizontal cut-off rule 112, can obtain PTC equipment 10 of the present invention one by one.By such formation PTC device crimp body of adjacent state mutually on longitudinal and transverse, then cut apart, can manufacture efficiently PTC device.
Except the regulation position at PTC element forms quadrant tubular recess, the method of manufacturing the PTC device as shown in Fig. 5 and Fig. 6 with the structure that the layered electrode of PTC element is electrically connected with castle shape electrode by formation, perforation and the plating etc. of crimp body as described above is known substantially, for example can be with reference to above-mentioned patent documentation 1 etc.
In addition, PTC device of the present invention is effective especially in the situation that PTC key element is hard.; be configured to the polymer that comprises comparison hard at the electric conductive polymer constituent that forms PTC key element; for example, in the situation that comprising polyvinylidene fluoride resin (PVDF); for example, compare with more soft resin (polyethylene); being difficult to relax the stress that the expansion/contraction of PTC key element produces, is effective so quadrant tubular recess is set in PTC device and forms castle shape electrode at this.
Symbol description
10 PTC devices
11 PTC elements
12,14 semicircle tubular concave portions
16,18 side metal level parts
20,22,24,26 end metal level parts
28 substrates
30 pads
32 scolder connecting portions
34 scolder parts
36 the 1st quadrant tubular recesses
37 the 2nd quadrant tubular recesses
40,41 sides
42 the 1st ends
44 the 2nd ends,
46 1 ends
48 another ends
50 the 1st castle shape electrodes
52 the 2nd castle shape electrodes
54 stratiform PTC key elements
56 the 1st layered electrodes
58 the 2nd layered electrodes
60 PTC unit
62 the 1st insulating barriers
64 the 2nd insulating barriers
66 PTC elements
The end of 68 the 1st layered electrodes
The end of 70 the 2nd layered electrodes,
72 side metal level parts
74,76 end metal level parts
78,80 stratiform PTC key elements
82,84 the 1st layered electrodes
86,88 the 2nd layered electrodes
90,92 PTC unit
94,96,98 insulating barriers
A part for 100 metal levels
102 crimp body
104 fan shape parts
The coating layer of 106 larger rectangles
Claims (6)
1. a PTC device, is configured to and has PTC element,
Described PTC element has:
PTC unit, it is configured to the 1st layered electrode and the 2nd layered electrode that have stratiform PTC key element and configure respectively on the surface of its both sides; With
Insulating barrier, it is positioned at the outside of each layered electrode,
Described PTC device is characterised in that,
PTC element has the 1st end and the 2nd end, and in the 1st end, there is the 1st quadrant tubular recess in its each angle part, and in the 2nd end, there is the 2nd quadrant tubular recess in its angle part,
Each the 1st quadrant tubular recess has the 1st castle shape electrode being electrically connected with the 1st layered electrode, and each the 2nd quadrant tubular recess has the 2nd castle shape electrode being connected with the 2nd layered electrode.
2. a PTC device, is characterized in that,
Be configured to the PTC element having as duplexer, this duplexer by be configured to there are multiple stratiform PTC key elements and on the surface of the both sides of each PTC key element respectively the 1st layered electrode of configuration and multiple PTC unit of the 2nd layered electrode and being disposed between PTC unit, make these PTC unit insulating barrier separating that is clipped in the middle be laminated
PTC element has the 1st end and the 2nd end,
PTC element, in the 1st end, has the 1st quadrant tubular recess in its each angle part, and in the 2nd end, has the 2nd quadrant tubular recess in its angle part,
Each the 1st quadrant tubular recess has the 1st castle shape electrode being electrically connected with the 1st layered electrode of each PTC key element, and each the 2nd quadrant tubular recess has the 2nd castle shape electrode being connected with the 2nd layered electrode.
3. PTC device according to claim 1 and 2, is characterized in that,
Each castle shape electrode is configured to the end metal level part that has the side metal level part of the side that is formed at regulation quadrant tubular recess and extend on the end of a first type surface of PTC element.
4. PTC device according to claim 3, is characterized in that,
End metal level part is configured to the metal deposition layer segment that has metal forming part and form thereon.
5. according to the PTC device described in claim 3 or 4, it is characterized in that,
Side metal level part is formed by metal-plated coating.
6. according to the PTC device described in any one in claim 1～5, it is characterized in that,
Stratiform PTC key element forms by being configured to the electric conductive polymer constituent that comprises polyvinylidene fluoride.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2011-201663 | 2011-09-15 | ||
| JP2011201663 | 2011-09-15 | ||
| PCT/JP2012/073709 WO2013039227A1 (en) | 2011-09-15 | 2012-09-14 | Positive temperature coefficient (ptc) device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103918040A true CN103918040A (en) | 2014-07-09 |
| CN103918040B CN103918040B (en) | 2018-06-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201280055237.9A Active CN103918040B (en) | 2011-09-15 | 2012-09-14 | Ptc device |
Country Status (4)
| Country | Link |
|---|---|
| JP (1) | JP6124793B2 (en) |
| KR (1) | KR101892789B1 (en) |
| CN (1) | CN103918040B (en) |
| WO (1) | WO2013039227A1 (en) |
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| CN104733266A (en) * | 2015-02-15 | 2015-06-24 | 上海长园维安电子线路保护有限公司 | Surface-mounted circuit protection element and manufacturing method |
| CN104733144A (en) * | 2015-02-06 | 2015-06-24 | 上海长园维安电子线路保护有限公司 | Surface mounting type circuit protection element and manufacturing method thereof |
| CN104851540A (en) * | 2014-02-18 | 2015-08-19 | 富致科技股份有限公司 | Polymer positive temperature coefficient (PPTC) over-current protection device |
| CN109727736A (en) * | 2017-10-27 | 2019-05-07 | 上海神沃电子有限公司 | Circuit protecting element |
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| EP3942576A4 (en) * | 2019-03-22 | 2022-04-13 | Littelfuse Electronics (Shanghai) Co., Ltd. | Ptc device including polyswitch |
| WO2021040017A1 (en) | 2019-08-30 | 2021-03-04 | 京セラ株式会社 | Electromagnetic field control member |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104851540A (en) * | 2014-02-18 | 2015-08-19 | 富致科技股份有限公司 | Polymer positive temperature coefficient (PPTC) over-current protection device |
| CN104733144A (en) * | 2015-02-06 | 2015-06-24 | 上海长园维安电子线路保护有限公司 | Surface mounting type circuit protection element and manufacturing method thereof |
| CN104733144B (en) * | 2015-02-06 | 2017-09-19 | 上海长园维安电子线路保护有限公司 | Surface attaching type circuit protecting element and manufacture method |
| CN104733266A (en) * | 2015-02-15 | 2015-06-24 | 上海长园维安电子线路保护有限公司 | Surface-mounted circuit protection element and manufacturing method |
| CN104733266B (en) * | 2015-02-15 | 2017-10-27 | 上海长园维安电子线路保护有限公司 | A kind of surface attaching type circuit protecting element and manufacture method |
| CN109727736A (en) * | 2017-10-27 | 2019-05-07 | 上海神沃电子有限公司 | Circuit protecting element |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101892789B1 (en) | 2018-08-28 |
| WO2013039227A1 (en) | 2013-03-21 |
| CN103918040B (en) | 2018-06-29 |
| JP6124793B2 (en) | 2017-05-10 |
| KR20140067107A (en) | 2014-06-03 |
| JPWO2013039227A1 (en) | 2015-03-26 |
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